I've never in my life met someone who looked down on people for not liking sports, but if I bring up sports in the wrong geek community, man I get eviscerated by holier-than-thou types who simply must explain why it's a waste of time and I'm stupid for liking it. (EDIT: I notice the other reply to you does exactly this, 'hurr durr sportsball', which is a perfect validation of my claim that this kind of attitude is very common. Unironic usage of 'handegg' is also very common -- they think it's really clever)

Is what it is, I suppose.

For those wondering why: Communication. Sports is one of the only things that truly transcends race, gender, religion, politics, etc. (EDIT: And the other reply to you describes someone who would rather fail to communicate with a dinner full of people than learn a shared topic, the exact case I worked to avoid!)

When I started waiting tables in college I needed an ice breaking subject that was far away from politics/current events and "the weather" is too boring. Sports is probably the #1 common discussion topic, even more than the most popular TV show of the time. For every "Game of Thrones" convo I could start, I could probably start 5 based on baseball, football or basketball.

Truly a great way to connect with different people that you'd otherwise not have basically anything to talk about with.